Please make window id visible (DVDGetOutputWindowInfo?)

Hi!

With all the changes currently going on I would like to suggest a 
function e.g. DVDGetOutputWindowInfo() which returns a struct of type 
DVDOutputWindowInfo_t that contains a handle to the output window (e.g. 
on X11 the window-id, on other graphics libraries that ogle supports 
some other handle). The function should also return what graphics 
library it runs on currently so one can choose the correct handle from 
the struct.

I _really_ need the window-id for further oKle development because of 
changes in the KDE window manager in respect to fullscreen mode. The 
control panel of oKle shows no more above the output window when you 
enter fullscreen mode. It's simply not possible any more for any window 
to stay above a fullscreened one, except if you reparent the control 
panel to be a child of the output window. And to do that you need the 
window-id.

Nice greets,
Martin